3 Hour - Stastic Fire Damper
The FD4-3C fire damper employs curtain style blades for point-of-origin control of fire in static HVAC systems. The FD4-3C imay be installed in vertical walls or partitions, or horizontally in floors or assemblies with fire resistance ratings up to 4 hours.
Installation Instructions
Frame: 22 ga. (0.85) galvanized steel.
Blades: 24 ga. (0.7) galvanized steel - curtain.
Fire Closure Device: Fusible link.
Fire Closure Temperature: 165oF (75oC)
Minimum Size: Vertical Mount: 4" x 2" (102 x 51)
Horizontal Mount: 4" x 7" (102 x 178)
Maximum Size: Single Section: Vertical: 34" x 32" (864 x 813)
Horizontal: 36" x 32" (915 x 813)
Vertical: 106" x 20" (3048 x 1930)
Multiple Section: Horizontal: 74" x 91" (1880 x 2311)
Stainless Steel: Single Section: Vertical: 34" x 20" (864 x 508)
Multiple Section: Vertical: 106" x 20" (2692 x 508)
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